Drier sheet-steel for paper-machines.



M. H. MEYERS. DRIER SHEET STEEL FOR PAPER MACHINES.

APPLICATION FILED JUNE 4, l9l5.

Patented Feb. 1, 1916.

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DRIER SHEET STEEL FOR PAPER MACHINES.

APPLICATION FILED JUNE 4. m5.

Patented Feb. 1, 1916.

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anucufoz MICHAEL H. MEYERS, OF WAU'SAU, WISCONSIN.

.DRIEB SHEET-STEEL FOB PAPER-MACHINES.

Specification of Letters Patent.

Patented Feb. 1, 1916.

Application filed June 4, 1915. Serial No. 32,030.

To all whom it may concern:

Be it known that I, MICHAEL H. lllnrnas, a citizen of the United States, residing at Vausau, in the county of Marathon and State of Wisconsin, have inventedcertain new and useful Improvements in Drier Sheet-Steel for Paper-Machines, of which the following is a specification.

The present invention relates to paper making machines in general, and more particularly to the means for, drying the web, the object of the invention being to provide a drying mechanism which embodies novel features of construction whereby steel or metal belts can be substituted for the usual felt belts, thereby increasino the efiiciency of the machine and avoiding the great expense which is incident to the necessity for very frequently replacing the worn out felt belts with new felt belts.

- Further objects of the invention are to provide a. paper drying mechanism which employs sheet metal drier belts, which can be operated at a high speed, which utilizes the heat from the drier rolls in the most effective manner, which confines the web of paper between the sheet metal belts so that the paper.will not cause trouble by winding around the drier rolls even though it may become torn or broken, which provides automatically for the expansion and contraction of the sheet metal belts caused by changes of temperature, and which can be used continuously without the necessity of frequently replacing the drier belts.

With these and other objects in view, the invention consists in certain novel combinations and arrangements of the parts as will more fully appear as the description proceeds, the novel features thereof being pointed out in the appended claims.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a side elevation of a aper drying machine constructed in accor ance with the invention, the supporting frame being of the conventional construction and indicated by dotted lines. Fig. 2 is a transverse sectional view through a-portion of the machine, showing one of the compensatingrollers and the manner of mounting the same.

'Fig. 3 is a detail View showing the manner of connecting the weight to the cables which that the paper web are connected to the hangers upon which the compensating rollers are journaled.

Corresponding and like parts are referred to in the followin description and indicated in all the views 0 the drawings by the same reference characters.

Specifically describing the present embodiment of the invention, the reference character A designates the main frame of the paper drying device, said frame being of the conventiona construction and constituting no part of the present invention. A series of drier rolls 1 are journaled upon the main frame A in the usual manner, said rolls being of the conventional construction and being heated in some suitable manner as by means of steam. The drier rolls extend transversely'across the machine and are arranged in superposed longitudinal rows, the rolls of the u per row being positioned over the s aces o the rolls of the lower row so that t e rolls of the two rows are alternately arranged.

The paper web WV enters the machine at one end thereof, passing around a guide roll 2 and being received between an upper sheet metal belt 3 aud o complemental lower sheet metal belt 4. The lower reach of the upper sheet metal belt 3 and the upper reach of the lower sheet metal belt 4 are threaded around the drier rolls 1, being carried alternately around the upper and lower rolls, s0 W is held between the two sheet metal belts 3 and 4 as it passes through the machine and is carried around the several drier rolls 1. end of the machine the paper web passes around a suitable guide roll 5 and leaves the drying mechanism.

The upper reach of the upper belt 3 passes At the o posite around a series of carrier rolls 6, and also around a suitable guide roll 7 at the discharge end of the machine. This upper reach of the sheet metal belt 3 is also engaged by a tension roll 8 which is journaled within bearings 9 which are adapted to be moved up and down by the screws 10 to increase or decrease the tension in the'sheet metal belt 3 as reqglired. The screws 10 are connected by suita le bevel gear 11 to a horizontal shaft 12 which is provided at one side temperature.

a tensioning roll 15 adapted to be moved up and down by a mechanism which is an exact duplicate of that previously described in connection with the upper sheet metal belt 3.

The tensioning rolls 8 and 15 admit of the sheet metal belts 3 and 4 being tightened or slackened as required, although additional mechanism is necessary for automatically pivotally connected at 19 to the main frame A.

The hangers 18 upon each side of the main frame A are connected by rods 20 which have the extremities thereof pivotally connected to the hangers. These rods 20 are extensible, being shown as formed in two sections connected by links or turn buckles 21 so that they can be adjusted in the necessary manner to cause all of the compensating rolls 16 to bear with an even pressure against the sheet metal belts. The end hangers 18 at each side of the machine are connected to cables 22 which pass around the guide pulleys 23 and support a. weight 24: arranged in an intermediate position between the side pieces of the main frame A. Adjustable links or turn buckles 25 may be interposed in the length of the cable 22 so as to admit of adjustment thereof. This weight 24 tends to swing the compensating rolls 16 toward the sheet metal belts 3 and 4 and the even pressure of these rolls against the belts deflects the same an amount suflicient to compensate for the expansion and contraction of the metal caused by changes of temperature.

The numeral 26 designates the usual automatic steam regulator, which is in the form of a little steel roll running against the sheet of paper. When the paper gets too dry it shrinks and movesthe roll so as to shut off some of the steam, while when the paper.

does not dry hard enough the roll will move in the opposite direction and manipulate the valve to supply an additional amount of steam. The sheet metal. belts 3 and 4: are

necessarily separated at the point where this.

steam regulating roll is mounted, and for this purpose. one of the sheet metal rolls is this construction both of the sheet metal shown as deflected from its usual path and caused to pass around a guide roll 27 With belts pass'around all of the drier rolls 1,

-- and this is preferable. to the alternate construction which would necessitate the use of a doctor.

The use of the sheet metalbelts will avoid the expense incident to the frequent replace ment of the felt belts and will also enable the machine to be operated at a higher rate of speed, for the reason that the web of paper is confined between the two sheet metal belts during its entire passage through the machine. There is no difliculty in starting the web of paper through the machine and the metal belts tend to hold the heat of the drier rolls so that it operates in a most effective manner upon the paper. Any suitable metal' or composition of metals may be employed for the construction of the sheet metal belts 3 and 4, although sheet steel will be probably found as serviceable and cheap as any metal obtainable.

The drier sheet steel has to be equipped with a hand guide roll and an automatic guide roll to keep it from running off the drier rollers. tome of the carrier rolls are to be used for this purpose. v

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is

1. A paper drying machine including drier rolls, endless imperforate sheet metal drier belts threaded around the drier rolls so as. to receive the sheet of paper between the same and carry it around the drier rolls, and means for compensating automatically 1 for the expansion and contraction of the sheet metal drier belts caused by changes of,

a tensioning roll for the sheet metal drier 1 belt, a series of swinging arms, compensating rolls carried by, the swlng ing arms and engaging the sheet metal drler belt, connecting means between the several swinging i arms, and means acting upon one of the 1 swinging arms for causing the compensating rolls to bear against the sheet metal drier belt with a uniform pressure so as to compensate for expansion and contraction due to changes of temperature. 1

4. A paper drying machinefincluding drier rolls, an endless sheet metal drier belt for carrying the paper around the drier rolls, tensioning means for the sheet metal drier belt, a series of corresponding swinging arms 1 10 upon the arms to swing mounted on each side of the sheet metal drier belt, compensating rolls journaled between the corresponding pairs of swinging arms and engaging the sheet metal drier belt, adjustable link connections between the swinging arms of each series, guide members, a weight, and a cable connected to the weight and end swinging arms and passing around the guide means, said weight acting the compensating rolls against the sheet metal drier belt with a uniform pressure so as to compensate for expansion and contraction due to changes of temperature.

In testimony whereof I affix my signature 1-5 in presence of two witnesses.

MICHAEL H. MEYERS. Witnesses:

ERNA GENRICH, CHAs. E. PARKER 

